> Is it considered that hard and expensive to just run a full backend stack on your own machines Well time is money. Things that are not core to your business

> Is it considered that hard and expensive to just run a full backend stack on your own machines Well time is money. Things that are not core to your business like managing email servers are better off outsourced; not because they are hard, but because it frees your time from setting up, managing, securing and monitoring your email servers, and allows you to put it in something that actually matters to what you do.